What length of wire is required

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A particular wire has a resistivity of 2.7 ? 10-8 ·m and a cross-sectional area of 4.1 ? 10-6 m2. A length of this wire is to be used as a resistor that will develop 47 W of power when connected across a 20 V battery. What length of wire is required?

Reference no: EM13332048

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